ASTROSAT CZTI

Data Quality Report

Orbit 28771

Creation date: 2024-06-27T19:56:06.208982
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1C05_019T04_9000004130_28771cztM0_level2.evt modeM0/AS1C05_019T04_9000004130_28771cztM0_level2_quad_clean.evt
Size (bytes)526,504,320119,937,600
Size502.1 MB 114.4 MB
Events in quadrant A3,177,303804,281
Events in quadrant B3,219,433822,427
Events in quadrant C4,192,555774,234
Events in quadrant D4,895,899758,909

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139292
B0140152
C0170732
D0193342

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6786190.279988%
B6787400.589362%
C67873364.950641%
D67872143.153087%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 8576 6788 1 1 0.01% 0.01%
B 8577 6788 6 6 0.07% 0.09%
C 8577 6787 57 57 0.66% 0.84%
D 8577 6788 178 178 2.08% 2.62%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 5 98 53476 326.07 808 791 161.6
A 13 254 11682 67.41 808 791 161.6
A 3 137 7797 43.36 808 791 161.6
B 10 245 22557 141.86 807 784 153.5
B 12 111 19001 118.69 807 784 153.5
B 11 111 17366 108.03 807 784 153.5
C 3 233 666141 3720.72 770 778 178.8
C 15 208 274146 1528.68 770 778 178.8
C 14 238 168824 939.72 770 778 178.8
D 1 52 881897 4760.16 776 753 185.1
D 8 195 879741 4748.51 776 753 185.1
D 7 69 108692 583.11 776 753 185.1

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter